Multiple RSS feeds scroller in one sidebar

If you’re running the latest version of WordPress, all default widgets (including the RSS widget that ships with WordPress) are multi-instance. This means you can drag multiple instances of the same widget onto the sidebar and have each one contain different content.

So without knowing exactly which “RSS scrolling widget” you’re using, I can only speak in general terms … but yes, typically you can have duplicate RSS widgets in the sidebar that list news items from different sources.